Connection for filters and the like



Nov. 27, 1934; w. H. DE LANCEY 1,982,375

CONNECTION FOR FILTERS AND THE LIKE Filed May 5l, 1933 E] INVENTOR.

l W1 RRE/v H. .UE LA/vc/EY A TTORNEYS.

Patented Nov. 2?', 1934 L@FFCE Y 1,982,376 ooNNEcTIoN-FoR'FILTERs AND THE LIKE( Warren H. De Lancey, Springfield, Mass., assignor to Gilbert &` Barker Manufacturing Company,

chusetts West Springfield, Mass., a corporation of Massaf :ApplicationMay 31,1933, serial N0..673,718 y 2 claims. (o1. 21o-164) This invention relates to an improved means -"for-connecting a lter or the like into the pipe line of a pumping system, such for example as the pumping system of an oil burner.

if In servicing an oil burner, it is necessary fre- 11 quently to removethe lter, veither for the pure pose of taking-it apart and cleaning it or,'in the i case fof the lter show-n herein, replacing it with a new one. With the arrangements now commonly used, the pipe line has to be disconnected' `at two or more points to enablethe lter to be l `removed. This requires considerable time and valso considerable care, when the filter is replaced,` to get thoroughly oil tight joints. The service `1l man is usually not asy skilleda Workman as the 'i one `who installed the'burner andv often leaks l fresult from faulty connections made by the service man in replacing the lter.

The object of this invention is to provide for Y quick and convenient removal and replacement of the lter and to make the Work so simple Y i 'that it can be done properly even by -anunskilled Workman. Moreparticularly, the invention -has for an object to provide a member which can be perma- -Y nently connected in the pipeline `of the pump- Iing` system and from whichthe filter is supported by a single detachable connection so that the filter may be removed by the simple act of f 30 turning it. The single connection may be an ordinary pipe thread which can be made tight by an unskilled workman more readily than unions' There is but one joint to and like connections. seal as against the two or more joints which are 35 necessary to seal with the arrangements nowin Common USB.

., Other objects will appear from the following and the member which supports it from the pump; 1.Fig..3 isa cross sectional view of said member taken on the line 3-3 of Fig. 2; and

Fig. 4 is a sectional plan view thereof taken on the line 4 4 of Fig. 3.

Referring to this drawing; the invention Will be disclosed, by way of illustrative example, in connection with the pumping system of an oil burner. In Fig. `1 there is shown, in more or less placement of the conventional form, an cil burner having a tube or barrel 10 tovvhich air is supplied by ar power driven ian 11. The nozzle' oi the burner; housed within tube 11), issu'ppled with oil by way of a pipe 12 from a pump 13 coupled to the fan. `As shown, there is interposed betweenthe pressure side of pump V13 and pipe 12 a pressure regulating and by-pass valve lli, having its by-pass port lconnected by a pipe 15 to the suctionside o'fpump 13. Ciil is supplied to the pump by Way'of a pipe 16. A filter, housed Within a casing 17, ,is pro- -vided through which the oil from pipe l-passes before reaching the pump 13. l

The problem of this'inventicn is to provide for the Vconvenient and easy removal and reiter without requiring, as a prerequisite, the disconnection oi parts of the pipe line. To this end, a member 18 is provided which forms a normally iixed and stationary part of the pipe line of the pumping system and to which the inlet pipe 16, the by-passpipe 15 and pump 13 may be connected permanently in the sense` that such connections need not be detached topermit removal of thefilter. This member, which is ordinarily al casting: is

*cored out to provide inlet and'outlet chambers `Bland 20 respectively, disposed at different levels with partof one, such as 20, overlying part of the other, as 19. interconnecting suchparts oi the tvvo chambers is a vertical passage 21 and aligned with this passage 2l and leading from the inlet chamber 19 downwardly is a passage 22 which extends to the lower outer face of-.rnember 18 and is adapted, as by the screwythreads shown, for connection to the filter in a manner to permit convenient attachment and detachment of the latter. The passage 22 is offlarger diameter than `passage 21. vThe inlet chamber 19 has a port 23 which is screw threaded to receivethepipe l5. an outlet passage 24 leading 'to and through the ilanged face 25 of member 18 and ua port 26` which is screw threaded to receive the' by-pass pipe 16. Ii no such by-pass pipe-is used the port 26 may be plugged. The ,face `2' ofl member 18 abuts a flanged end of pumpl andis secured thereto by cap screws 27 which-passfthrough tlfieilangej 28 ofpurnpfl andare threaded into the flange 29 of member 18. This fianged end of pump 13 has a passage 30 which forms the iintake of the pump and which registers with passage 24. j

The lter shown herein by way of illustrative example, comprises a iiltering wall 31 of suitable flexible material mounted on inner and out- The outlet chamberl 20 has 9 er helical supports 32 and 33, and upper and lower heads 34 and 35 which with said wall form a complete enclosure. Within such enclosure is a second filtering element comprising a cylindrical screen 36 mounted between and closed at its ends by the heads 34 and 35. The heads 34 and 35 are held together by suitable rods, one of which is shown at 35. The upper head has connected thereto an outlet pipe 37 which communicates at its lower end with the space within screen 36. This ltering unit is supported within casing 17 and in'spaced relation with the end walls and the peripheral wall thereof by a plurality of lugs 38 formed by indenting the casing 17 at a plurality of points near the top and near the bottom thereof. The casing, as shown, is made in two sections, comprising an upper and a lower cup-like portion. The nltering unit is slipped into place and seated in one of these sections and then the other section is slipped into place over the filtering unit,

Yafter which the two sections are fastened to.

gether by the crimped seam 39. This form of nlter is not intended to be taken apart.Y After it has been used as long as possible it is removed and a new one substituted. Obviously, any other suitable form of lter may be used as the invention is independent of the particular construction of the iilter. The casing 17 has an inlet pipe 40 leading into the upper part thereof and communicating with the space outthan is consumed by the nozzle.

side the filtering unit 31. At the bottom of the 'casing is a plug 41 which is readily removable, when required, for draining oil any sludge which may collect in the bottom of the casing.

The lter is supported from the member 18 by screwing the inlet pipe 40 into the passage 22. The filter outlet pipe 37 extends beyond the end of pipe 40 and into the passage 21,-the upper end of the pipe 37 preferably being charnfered and the lower end of passage 21 preferably being countersunk to facilitate the entrance of the pipe into passage 21. The pipe 37 slidably ts passage 21 and closely enough to substantially close oi direct communication between the inlet and outlet chambers 19 and 20, respectively of Y member 18.

When the lter is thus 'connected to member 18, oil entering at port 23 flows down into the outer part of the lter casing 17 through the space between the pipes 40 and 37, then passes through the filtering unit and ows upwardly through pipe 37 into outlet chamber 20 and thence by way of passages 24 andA 30 to pump 13.

The by-pass pipe l5, being connected to the outlet chamber 20 oi member 18, enables excess pumped oil to be returned to the suction side of the pump without requiring such oil to again pass through the filter as has been usual heretofore-thus prolonging the life of the ltering unit to a substantial extent under the usual conditions where a great deal more oil is pumped Hence, since much of the pumped oil is by-passed, itis desirable to avoid passing it through the filter an unnecessary number of times.

The invention provides for quick and convenient removal and replacement of the lter d tessere without disconnecting any parts ofthe pipe line. One simply unscrews the pipe nipple 40 of the lter and then withdraws it and pipe 3'? from member 18. A new unit is put in place in correspondingly easy fashion. The pipe 3'? is slid through hole 22 and chamber 19 until its upper end lies in the lower and entrance end of passage 21. The nipple 40 will then be in position to screw into hole 22 and as it is screwed into place, pipe 37 slides upwardly in passage 21 until it nally assumes the position shown. The entire vpipe line of the pumping system may be connected permanently with the assurance that once connections of satisfactory oil-tight form are made, they will not have tov be later impaired in order to remove and replace a lter. The work of removal of the filter and replacing it with a new one is reduced to the simplest possible form. There is but one connection to make,-that between pipe 40 and hole 22,-and this is of a character which can easily be made tight even by a relatively unskilled workman. The invention lls an important need in connection with oil burners.

The invention has been disclosed herein, in an embodiment at present preferred, for illustrative purposes, but the scope of the invention is defined by the appended claims rather than by they foregoing description.

What I claim is: 1 1. In a pumping system, wherein a pump is interposed in a pipe line and a by-pass conduit is provided to interconnect the pressure with the suction side of the pump, a member secured to the suction side of said pump and having an outlet chamber communicating therewith and with said by-pass conduit, said member having an inlet chamber connected to the suction side of said pipe line and a passage interconnecting said chambers, said member having another and larger passage aligned with the rst passage but extending in the opposite direction from the inlet chamber to an outer wall of said member, and a filter having an inlet pipe detachably conf nected to said larger passage and an outlet pipe j off direct communication between the inlet and j outlet chambers of said member.

2. In combination, a coupling member having inlet and outlet passages each adapted at one end for connection to a pipe line, the other ends of said passages terminating with cylindrical end portions of different diameters and disposed in radially spaced concentrical relation, a lter having xed thereto inlet and'outlet pipes of different diameters disposed in radially spaced concentrical relation, both said pipes having open outer ends, the smaller pipe remo-vably mounted in the smaller end portion with a slip fit, the larger pipe being threaded into the larger end portion and the screw threaded engagement of the larger pipe and larger end portion serving to support the nlter from said member.

WARREN H. DE LANCEY. 

